Hulk Hogan's son Nick Bollea is set to spend the rest of his prison sentence in an adult facility - and will be transferred on his 18th birthday, according to reports.

The former wrestler's son is currently serving an eight-month sentence at Florida's Pinellas County Jail, after pleading no contest to a felony of reckless driving following a horrific car crash in Clearwater, Florida - which has left his friend John Graziano brain damaged.

The teenager initially spent his first few weeks in prison in solitary confinement, but was later housed with other juveniles.

But now, the teenager faces spending the rest of his sentence incarcerated with adults - and is reportedly set to move to a dormitory style cell on Sunday - the day he turns 18.

Bollea will spend his time with fellow inmates who are either awaiting sentencing or who have been charged with misdemeanours and small felonies, reports TMZ.com.

Last month, Hogan spoke out over his concern for his son's state of mind since being imprisoned, claiming the teen had been "unravelling" during his spell behind bars.

It is thought Bollea's legal team will contest the move. He is set for release in October.